JPS59219815A - Tension resistance unit mounting bracket - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tensioning device mounting bracket for attaching a conductor tensioning device to a steel tower arm having an angle structure.

In recent years, with the growth in electricity demand, the development of ultra-super high voltage, large capacity power transmission has been actively promoted, and along with this, conductor tension devices,
There are plans to make power transmission towers stronger and larger.

By the way, as shown in Fig. 1, the conventional tension device mounting bracket is equipped with connecting fittings (1) on both sides (or one side) for attaching the conductor tension device.A flat board (2) is attached to the tower arm. (3) was attached to the lower surface of the tip via a batten (4). Therefore, in order to avoid interference between the tower arm (3) and the vertically movable connecting fitting (1), both sides of the board should be made to protrude outside the tower arm, but the problem is that the board (2) becomes large. . In general, the structure of the tip of a steel tower arm is such that the upper and lower parts of the flat plate-like vertical member (5) are held together by a pair of angles (6), and the upper and lower ends of the plate-shaped vertical member (5) are held together in a state where the palms are joined together and the upper and lower ends are fitted with battens ( 8) and (4) were connected, and a tension device mounting bracket was attached to the bottom batten (4), so the tip of the tower arm had the disadvantage of being subjected to large torsional forces due to external forces acting on the tension device mounting bracket. Therefore, the conventional tension device mounting brackets and tower arm tips mentioned above are unsuitable for ultra-super-high voltage, large-capacity power transmission where extremely large external forces are generated, and drastic countermeasures are desired. .

In view of the above points, the present invention aims to strengthen the tension device mounting bracket with a relatively simple structure, and also to strengthen the tip of the tower arm. The purpose is to provide a tension device mounting bracket that does not generate torsional force or couple force due to the device, and is therefore suitable for ultra-super high voltage, large capacity power transmission.Its configuration consists of a lower beam at the end of the tower arm and a lower beam. A support shaft is installed on the vertical wall of the box-shaped main body that is inserted between the lower beam and the lower beam, and a conductor tension device is attached to the other end of the support shaft. It is characterized by two connecting fittings provided with attachment parts that are rotatably attached.

The present invention will be specifically described below based on embodiments shown in the drawings. In Figures 2 to 5, the tension device mounting bracket (work 1)
) is a box-shaped main body (1
5) and the upper surface part 02) and lower surface part (I3) of this main body.
) are drilled with a large number of bolt holes (16), and a support shaft (17) is installed horizontally in the center of both vertical walls, and the connecting fittings (I8) and (I9) are opposed to this support shaft. It is rotatably mounted. In this embodiment, the second vertical wall section (20) is placed at the center between the two vertical wall sections.
21 and the lower surface part (■3), and the connecting fitting (■8
) is loosely fitted into the vertical wall part (20) with its bifurcated bearing part (21), and the connecting metal fitting (1) is loosely fitted with its bifurcated bearing part (22) into the vertical wall part (20).
8) and the rain vertical wall part I, and these two connecting fittings are inserted into the rain vertical wall part u4) and the second vertical wall part (20) and are supported by the support shaft α force. . Connecting fittings 08), (19)
The other end forms a clevis portion (23) for attaching a conductor tensioning device, for example, a tower-side yoke of the conductor tensioning device.

The tension device mounting bracket is inserted between the lower beams of the tower arm end portion (24) of the power transmission tower, and is attached to the lower beams with a connector. That is, the lower beam of the tower arm tip C241, for example, the batten (25), is clamped with a pair of angles (26) and the lower beam (27
) on the lower surface of the upper surface part (1
2) with bolts and nuts, and attach it to the lower beam, such as the batten (
29) with a pair of angles (30) and put the hands together.By attaching the lower surface part (13) to the upper surface of the lower beam with bolts and nuts via the battens as necessary, the end of the tower arm can be attached. A tension device mounting bracket 0υ is installed in the center of part (24).
are arranged in an integrated manner.

Therefore, the tension device mounting bracket according to the present invention, whose box-shaped main body (5) also serves as a part of the tower arm tip (24), is useful for saving materials for the tower arm tip (24). Also, since the main body (15) has a box-shaped structure, it is possible to strengthen the tension device mounting bracket (1υ) and the tower arm tip (24).
The support shaft 07) that supports the steel tower arm tip (24)
), external forces acting on the support shaft θ force, that is, torsional force or couple force due to the tension of the conductor tension device, etc., are likely to occur at the tip of the tower arm. Therefore, the tip of the tower arm can be made smaller and lighter. Further, since the main body part (15) supports the connecting fittings ug+ and aa with one support shaft, the width of the main body part (15) in the line direction can be made relatively narrow.

As explained above, in the present invention, the tension device mounting bracket has a relatively simple structure, and it is possible to strengthen the stiffener and the tip of the tower arm. Since the structure is such that no torsional force or couple force is generated by the conductor tension device, it is particularly suitable for ultra-super-high voltage, large-capacity power transmission.

[Brief explanation of the drawing]

Figure 1 is a side view of a conventional product attached to a tower arm, Figure 2 is a perspective view showing an embodiment of the present invention, and Figure 3 is a state in which the product shown in Figure 2 is installed at the tip of the tower arm. 4 is a sectional view taken along the line A-A in FIG. 3, and FIG.
It is a sectional view taken along the line BB in the figure. 11... Tension device mounting bracket, 14... Vertical wall part, 1
5... Main body part, 17... Support shaft, 18.19... Connecting metal fittings, 2... Clevis part, 24... Steel tower arm tip. Patent applicant Kansai Electric Power Co., Inc. Agent of Japan Malleable Iron Works Co., Ltd.
Patent Attorney Ta 1) Kenzo

Claims (1)

[Claims] A single support shaft is installed on the vertical wall of the box-shaped main body that is inserted between the lower beams at the tip of the tower arm and connected to the lower beams. A tension device mounting bracket consisting of two connecting fittings each having a conductor tension device mounting portion at the other end rotatably attached to a support shaft.